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Finding the Fourth Proportional to 210,781.91, 290,854.56 and 124,744.66

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Solution

The fourth proportional to 210,781.91, 290,854.56 and 124,744.66 is: 172,133.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,781.91 : 290,854.56 = 124,744.66 : x
  2. Step 2: Convert to fraction form
    210,781.91/290,854.56 = 124,744.66/x
  3. Step 3: Cross multiply
    210,781.91x = 290,854.56 × 124,744.66
  4. Step 4: Simplify right side
    210,781.91x = 36,282,552,937.31
  5. Step 5: Solve for x
    x = 36,282,552,937.31/210,781.91
  6. Step 6: Final answer
    x = 172,133.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.